Here is the full list of all 38 HELLDIVERS 2 achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
Provide assisted reload for a teammate.
Throw back a live grenade.
Upgrade all ship modules at least 1 level.
Defeat a Bile Titan
Extract with a full team on a Hard difficulty or more mission.
Complete a Stalker Hive tactical objective.
Play at least 50 missions.
Be injured in all limbs at the same time.
Kill 5,000 enemies.
Complete 10 tactical objectives.
Kill 25 enemies with one stratagem.
Complete a mission but fail to extract.
Fire at least 150 rounds in one burst, killing at least 10 enemies.
Kill a bug warrior with a shotgun within 1 meter.
Play a planet defense mission.
Extract after the timer reaches zero.
Customize your Helldiver with new cape, armor, and helmet.
Kill a target at a distance of over 100m.
Defeat a Hulk.
Fly at least 25 meters from the shockwave of an explosion.
Heal another player using stims.
Play 1 Bug Mission.
Play 1 Bot Mission.
Extract from a mission during nighttime.
Kill 150 enemies during the same mission.
Complete Basic Training.
Complete an Extreme difficulty mission or higher without anyone dying.
Complete a full Hard difficulty mission or higher without anyone firing their primary or support weapon.
Complete a full Extreme difficulty Blitz mission and extract in under 6 minutes.
Kill a Charger with a resupply pod.
Extract at least 15 rare samples from a mission as a team.
Complete at least 100 missions.
Have 6 orbital barrage stratagems in the same place at the same time.
Kill 100 enemies using fire damage during the same mission.
Reach max level on one ship module.
Shoot off both arms on a Hulk and then extract while it's alive.
While using a jump pack, knock yourself into a ragdoll state.
Extract with at least 15 common samples.